diff --git a/README.md b/README.md
index 08f95f5..62469d2 100644
--- a/README.md
+++ b/README.md
@@ -17,4 +17,8 @@ In `.tsconfig`, add `liff-type` to `types` in `compilerOptions`
         "types": ["liff-type"]
     }
 }
-```
\ No newline at end of file
+```
+
+In your code, you can access `liff` directly as global variable without window! 
+
+![example](doc/example.png)
diff --git a/doc/example.png b/doc/example.png
new file mode 100644
index 0000000..c53663f
Binary files /dev/null and b/doc/example.png differ